package com.itcast;

public class HelloWorld {
    public static void main(String[] args) {
        //打印字符串
        System.out.println("Hello World!");
        //打印整形
        System.out.println(1234);
        //输出boolean类型的值
        System.out.println(true);
        System.out.println(false);
        //打印小数
        System.out.println(0.5);

    }
}
